Means for dressing grinding-wheels



D. E. ROSS AND 0. GARRISUN. MEANS FOR nHEssfNG GRxNDING WHEELS.

APPLICATION FILED JAN. I7, |918.

Patente Jan. 18, 1921.

Swans-SHEET l D. E. ROSS ANB 0. GARRISON. MEANS FOR Dnissm@ ummm] WHEELS.

3 SHEETS-SHEET 2.

Patented Jan. 18, 1921.

.a -alla s E D. E. ROSS AND O iGAHRISON. MEANS PQR nmssmc www@ WHEELS.

APPLICATION FiLED JAN. I?, 1918. V

Patented Jan. 18)` 1921 3 SHEETS -SHEET 3.

QUN!

muQwu UNITED s'ri'rias PATENT OFFICE.

DAVID E. ROSS. OF LA FAYETTE, INDIANA. AND ORLANDO GARRISON, OF DAYTON, OHIO; SAID` ROSS ASSIGNOR TO SAID GARRISON.

Original application tiled To a?? whom. it may concern.

Be it known that we.v DAi-'io E. Ross and ORLANDO ("rAnnIsoN, citizens ot the United States, said Ross residing at lia Fayette. county of Tippecanoe, State of Indiana. said (irARnisoN residingat Daytoihy in the county of lllontgoinery and State of Ohio. have invented certain new and useful improvements in Means for Dressing Grinding- Wheels: and we hereby dechire that the i'ollowing is a full, clear. and exact description thereof.` reference being had to the aci-ompiinying drawings. which form part of this` specification. Y

This invention relates tc machines for grinding the teeth of gears by means of an emery wheel or other suitable grinding wheel having its edge dressed to pressure angle of tooth to be generated as described in our original application filed July 14th, 1917, Serial No. 180.566. The object of the present invention is to provide inonds. or other means for dreing the grinding wheel so that it can be trimmed or dressed in exactly the desired manner; and to provide micrometer adjustments` and set ting for the diamonds.

le will explain the invention with reference to the accompanying drawings which .Jillustrateone practical embodiment and ap- 'plication ot the invention. and an understanding thereof' will enable others to readily adopt and use the invention; and in the claims we summarize the essentials of the invention and novel features and combinations of parts, for which protection is desired.

In said drawings: i Figure 1 is a longitudinal sect'onal elevation of a gear grinding machin embodying the invention, partly broken away.

Fig. il is an enlarged side elevation of the ear supporting devices, .and diamond ad- )usting devices. .1 i

Fig. 3 is a detail plan View of Fig. 2, with parts removed. i

Fig. 4 is an enlarged vertical sectional view of the diamond setting devices. Fig. 5 is .a transverse section thereof on line 5-5, Fig. 4. Fig. 6 is a section on line 6 6,

he gear cutting machine in connection with which our invention is shown, com- Speclcation of Letters Patent.

novel means for adjusting the dia,

Patented Jan. 18, 1921.

July 14, 1917, Serial No. 180,566. Divided and this application illed January Serial No. 212,259.

prises a hase 1 irovided with a support 8 for a sliding tab e i' which carries the work supporting and adjusting devices, and the grinder. and the grinder dressing devices which latter embody the` invention which we wish to protect herein.

This body l is provided with guides for a sliding member 2 which carries the grinding wheel 18) and the devices for adjusting this` wheel relative to the work. Said member 2 also carries a micrometer bar 165, which is used in setting the diamonds as hereinafter explained.

The member 2 is adapted to be reciprocated toward and from the work support by any suitable means.

The grinding wheel 180 is mounted on a spindle 25 which may be driven by any suit.- able means and said grinding wheel 180 is preferably adjustablv and Iremovably secured on the spindle 25. he spindle beariiws are preferably adjustable so that the spind e can he alined with the utmost accuracy and truth in its bearings, and the wheel may be raised or lowered by turning the screw 163.

The sides of wheel 180 should be dressed to the pressure angle of the gear to be generated, and the edge of the wheel in cross section should be Jduplicate ot' a rack tooth of the desired pitch and pressure angle.

The gears to be ground are mounted upon a work spindle 135 (Figs. l. and 5) which is preferably `mounted in a head or bracket 4 on a carrier or work table 7 mounted on the main frame beneath th rinding wheel 'and movable transversely o tilie main frameand on the outer end of the spindle is a master or pattern gear 185, which should 4bean exact duplicate of the gear to `be ground, and

which may beA removably secured on the spindle in' any suitable manner so that it The slide 7 has a rearward extension or bracket T on which are mounted the de` rires l'or dressing the grinding wheel. A side, dressing diamond 124 and an edge dressing diamond 152.4l are. mounted respectively on the top and end of a horizontally adjustable slide 100, whit-li is mounted to inove horizontally in a vertically adjustable slide` 101 attached to a slide lill, which is guided on a bracket 00" attached to the npper end of a rotatable tubular support 9G. which is rotatably niounted upon a sleeve 98, that is iii turn mounted on a nut 111. screwed on a standard 0T". Said sleeve 98 has a flange on its lower end engaging an annular recess in the nut 114 and is conl fined thereto b v an annulus S151 secured by screws 121. Y

The standard 9T has a base UT mounted Y. upon the bracket T and secured by a` out 110 and pin 115. The support tl() is yield*- ingly held down upon the sleeve ll-i by means ol' a spring 100 strung on a rod 10G extendingr into the standard 0T and connet ted with a cap 10T closing the upper end ot the support 96.

liy rotating the nut 114, the sleeve 98 and the `wheel dressing devices thereon can be raised or lowered. The sleeve 0S is slidablc on the standard 9T but is prevented from rotating on the standard 9T by means of a key 208, engaging corresponding slots in the sleeve and standard, as shown, so as to perinit the sleeve and support to be raised on the standard, but the sleeve cannot rotate thereon.

The support 00 niay be turned onthe sleeve to bring the diamond 1211 into positions to engage either side of the grinder wheel 180 and when in proper position may be locked by suitable means. For this purpose the sleeve may be provided with notches d, 9G?, 9(3, (see Figs. 3 and 5) alranged at the proper points, with any one of which a pin 108 may be engaged. The pin 108 may be guided in a tubular nous ing on the side of the support 96; said pin being movably pressed inward by a spring 113 as indicated in the drawings.

The slide 100 may be adjusted by ii'ieans of a screw 104 and clamped by screw 118. The slide 101 may be adjusted by a rack 102 on the Slide engaging a pinion 103I7 on the shaft 103 of a handv wheel 105.

Pin 108 is engaged with notch 9 0 only when setting diamond 124 tolieight. Pin 108 must be either in slot 96 or 90 when used for dressing either sides or periphery of wheel. Diamonds after once set, require adjustment only occasionally to compensate for amount Worn oil' diamond.

To dress outside dz'awwer 0f wheel.- Plaoe pin 108 in. either the right or left notch 96d or 96 then screw wheel head 3 down until the periphery of grinding Wheel iHH loin-lies` diamond 124; mond barlr and forth. by revolving handle 117i, and continue to rotate wheel 180 until its periphery is in pei-lect condition.

To .wf fit/mond #125.1 nul dress Sides of nf/nfr/.wl'ter the periphery oit' wheel is dressed: niove slide '7 li" handle 145 until the limiting pin 1 il engages thc related lioltin guide H to lock the slide. Then engage pin 10e with say notch 00F; then raise the dresser slide 102 by nieans of hand wheel 105. until diamond 124.l is opposite the side of grinding wheel; then adjust diamond 1241 against the grinding wheel by operating screw 104; and gradually -raisel and lower slide 101 while the grinding wheel is rotated until the opposed beveled side ol wheel 180 is properly dressed. Then tui-:i dresser to opposite side ol' wheel and engage pin 108 with notch $1151 and operate diamond as before. until the grinding wheel is dressed to give correct pitch to teeth to be ground.

Su mino/if; o f' ope/'affinite'.

when the device is used in the machine shown in our aforesaid application to pre pare grinding wheel we proceed follows: )Ve first ascertain the root radius of gear (which for example We assume is 38,5154, the distance from center of work to lower edge of wheel), then proceed. as follows:

1) Set micrometer 165 to 38,554. (2) Advance head 2 to forward ond dtstroke; this will bring the end 165i of the micrometer ba r directly over diamond 124 when index pin 10??` of dressing device is in slot 90d: (Il) raise diamond 124 into Contact with end of n'iicrmneteibar by revolving nut 114: (l) turn support 98 until pin 10S engages slot .96%` (5) move member 2 to extreme inner position to bring the center of the grinding wheel directly over diamond '124; leave member 2 in this position until then pass dia 4,the grinding wheel is dressed on its periphery and sides; turn handle 188 to move the grinding wheel c wn t0 diamond; and then move the diamond back and forth under Wheel by turning handle continue to shift wheel down until its periphery is perfectly dressed; (7) then turn handle 145 to bring slide "7 to central position and insert index pin 144 into index hole in part 8; (8) then move diamond 1241 over to the grinding wheel by turning screw 104; then turn hand wheel 105, and move diamond u and down side of wheel; (9) then turn the support to move diamond to op osite side of wheel, and engage pin 108 in s ot 96r and move the diamond up and down; (10) 4continue reversing diamond from side to side of wheel and adjusting diamond until-wheel is of proper Width on face.

To redress the grinding wheel when worn, operate thereon 1n same manner and dress spindles the wheel on both sides and periphery. The index pin 144 should be engaged with guide S when dressing the sides of the grinding wheel to insure that such wheel is absolutely central or in line with tbe work spindle. The original settingr of the diamonds will dress the wheel to proper width and angle without any measuring.K except to compensate for wear ot' the. dia monds, which will be negligible.

What we claim is:

1. ln combination a standard, a sleeve ad justabl'v mounted on said standard. a support rotatably mounted on said sleeve. a vertically adjustable slide mounted on said support. a horizontally adjustable slide mounted on the vertically adjustable slide, and wheel dressing means carried by the horizontally adjustable slide.

2. ln combination with a grinding wheel carrier, and a work carrier; of devices for dressing the grinding wheel comprising a, standard mounted on said carrier` a support rotatably mount/ed on said standard, a. vertically adjustable slide lmounted on said support` a horizontallyY adjustable slidt mounted on the vertically .adjustable slide` and dia monds carriedlby tleborizontally adjustable slide.

Il. ln combination with a grindingr wheel carrier and a work carrier: of devices for dressingr the grinding;r wheel comprising a standard mounted on said carrier, a sleeve adjustably mounted ou said standard, a support rotatably mounted on said sleeve.` a ver tically adjustable slide mounted on said support, a horizontally adjustable slide mounted on the vertically adjustable slide, and diamonds carried by the horizontally adjustable slide.

4. In combination with a grinding wheel carrier and a work carrier: of devices for dressing: the jr1'indin; r wheel comprising` a standard mounted on said work carrier, a sleeve slidably mountedon said standard, means for adjustingr said sleeve. a support rotatably mounted on said sleeve. an adjust able slide mounted on said support, a diamond carried by said slide and a micrometer gage mounted on the grinding wheel carrier against which the diamond is adjusted pre paratory to dressing the wheel.

5. In combination a standard, a sleeve adjustably mounted. on said standard. a support rotatably mounted on said sleevef, a Erst slide mounted on said support, a 'second slide mounted on the. first slide, diamonds carried by the sevrmd slide` means for adjusting the second slide horizontally relative to the first slide and means for adjusting the first slide vertically relative to the support. i

(i. In combination with a grinding wheel carrier and a work carrier: a standard mounted on said carrier, a sleeve atjustably mounted on seid standard, a sup rt rotatably mounted on sind sleeve, a rst vert1.

cally adjustable slide mounted lar suport, a second slide mounted on the vertical y adjustable slide, diamonds narried by the second slide, means for adjust ing the second slide horizontally relative to the tirst slide, and means for adjusting the first slide vertically relative to the support.

In combination a lgrinding wheel carrier. a standard, a tubular support. rotatably mounted on said standard, a vertically a jnstable slide mounted on said tubular support, a horizontally adjustable slide mounted on the verticallv adjustable slide, diamonds carried by the horizontally adjustable Slide and means for vertically adjusting the support. means for rotatably adjusting `und holding;f the snp )ox-t: and a micromettengage mounted on the grrindiner wheel carrier against which the diamond` is adjusted rpreparatory to dressingr the wheel.

H. ln combination a grrindinglr wheel carrier, a standard, a. sleeve adj ustably mounted on said standard, a support rotatably mounted on said sleeve, a vertically adjustable slide mounted on said tubular support. a horizontally adjustable slide mounted on the vertically adjustable slide, diamonds carried by the horizontally adjustable slide and means for vertically adjustingr the sleeve onthe standard, means for rotatably adjustingr and holdingl the tubular support ou the sleeve: and a micrometer gage mounted on the grinding wheel carrier against which the diamond is adjusted preparatory to dressimcy the wheel.

l). ln combination with a grrindin; r wheel carrier and a work carrier: a standard mounted on said carrier, a. sleeve adjustably mounted on said standard, a support rotatably mounted on said sleeve, a vertically adjustable slide mounted on Said tubular support. a horizontally ad'ustable slide mounted on the vertically at justable slide. diamonds carried by the horizontally adjustable slide. means for vertically adjusting the sleeve on the standard, `'nd means for. rotatably adj nsting and holding the tubular sup port on the sleeve.

it). ln combination with a grinding wheel carrier. a standard adjacent said carrier, a sleeve adjustably mounted on said standard, a support rotatably mounted on said sleeve, a vertically adjustable slide mounted on said support, a horizontally adjustable slide mounted on the vertica ly adjustable Slide, a. diamond carried by the horizontall adjustable slide, means for vertically a justing the sleeve on the standard, means for rotatably ad'usting and holding the tubular support on t e sleeve, and a micrometer gege. mounted on the grinding wheel carrier and against which the diamond is adjusted pre pax-story to dressing the wheel.

on said tubu-' Mrnna for drowning :i grinding n'lwf'l. ing il .--isinlurelt n nlnilnr support, vr and rumlulflj; inonntvd upon said india und lunivlnmally adjust :mi n huid support, and un @avril-f5 in: one if Huid lr-inning u grinding wllwel.

tisili' ndjnslulilo slide :ipp-url: n horizontally nil lo moulin-d on said Yferioally slide*1 sind n'liool draining means lille.

:ng u grinding Who-@L nu rm'tiraillyadjustalil nl-wndm inonntm on nid standard, u tubuln r au] sgmlfilled owl* und rotatably mounted In ny -n sind inmnlwi"y menus for vertically ndv inning tlv' member on Lini Standard, wheel drawing nnnns mljlnstnlfy mounted on :said bnypor. aii'nllnmlns for lurking the support lo tln member when udinsed.

i il ln vomliinntion with n grinding wheel warrior :md n work e'ns'rior; of :nouns for ilu grinding what-l, oomprigiing a inounvd on .Qziid work vul-riet", n mnnl n )unimi upon Suid stand- Y Sido inonntvd on Y Y Y .i illyndjuculilesfido ri-rrriillav aufnsnble slide, and dizi- "1 lf uri-ml lijf lin- .inir'izontzilly adjust Marlo.

E Means for rlrunsingj :ng :l standard. i

dine-in inounvel nn sind standard, :i i riait-ani itwl to und rotatably lied on anni dveyw. und udjnstnblrwhen! i145 devia-i; nn said nnpporti.

ons .for drinnini; grindin;f whe-els,

:nl insmliliuluwl flressing moans on said Support, nwnn for wrtrulljll adjusting the :down nn lli@ standard; und means; for Invio ing tlm support on the slome.

ld In nnliinotion with :i grinding wheel rurifiir und n work mirrisfr; of devices for homing lnl grinding wheel comprising u szxndnrd inonnlod on said work carrier, a imtimilly udjufstulili, slaruvn nnnlntod on said liendzU-d a, tubular support; rotatably monntied on said sleeve around and exterior n the standard, an adjustable slide mounted nn said tubular support, and diamonds carried by sid slide.

In fombination with grinding Wheel support und .a` work carrier; of devices for dressing the grinding wheel comprising a standard mounted on thi1 work carrier, :i support rotatably mounted on Said standard, vertically and horizontally adjustable wheel dressing means on said support, and a` mirrometer gage mounted on the grindin wheel Support and against whii'h the whee dressing menno is adjusted preparatory to dressing {lin wheel.

2U. In rombinntion with a grinding wheel warrior and u work rarrier; of demons for :housing illu grinding wheel comprising a #mudar-d monntod on said work carrier, u support rotatably and vertically udjustal'ily innnnlud on said standard, :in adjustable slidu mounted on sind support, a diamond vus rind by mid lido and :L niir'roxnotor gage mounted on the` grinrrling wheel carrier :nguinst which tlm diamond is adjusted prenil'ulnry lea ili'osing the Wluol.

2l. ln 'mnliini-ition with u grinding wheel support. :md u work support; of devices for drwaing tln grinding whool comprising a standard nmuntod on tho work support, a witiv-lll) udjntubl-.f sleeve mounted on said standaard, :l .nq'xpnrt rotatably mounted on :will .wlvvuu :nljusnble heul dressing moans on mild finfiport, und :i mifroinoter gage mounted on tho grindingr wheel support and against which the ivlieol dressing moans is adjused preparatory to dressing the wheel.

In testimony that we, claim the .foregoing :is our own, we aflx our signatures. 

